TNS Astronomical Transient Report No. 264236 [ 2025TNSTR2966....1T ]
Date Received (UTC): 2025-07-29 13:19:15
Date made public:
Sender: ATLAS_Bot1
Reporting Group: ATLAS Discovery Data Source: ATLAS
J. Tonry, L. Denneau, H. Weiland, R. Siverd (IfA, University of Hawaii), N. Erasmus, W. Koorts (South African Astronomical Observatory), A. Jordan, V. Suc (UAI, Obstech), M. R. Alarcón, J. Licandro, P. Nichita (IAC), S. J. Smartt, K. W. Smith (Oxford/QUB), D. R. Young, M. Nicholl, M. Fulton, M. McCollum, T. Moore, J. Weston, X. Sheng, C. R. Angus, A. Wilson, A. Aamer, D. Magill (QUB), P. Ramsden (Birmingham/QUB), L. Shingles (GSI/QUB), S. Srivastav, J. H. Gillanders, H. Stevance, A. J. Cooper, F. Stoppa, J. Tweddle (Oxford), L. Rhodes (TSI/McGill), A. Rest (STScI), T.-W. Chen (NCU), C. Stubbs (Harvard), J. S. Sommer (LMU), B. P. Schmidt (ANU) report/s the discovery of a new astronomical transient.
IAU Designation: SN 2025som
Discoverer internal name: ATLAS25ile
Coordinates (J2000): RA = 03:27:36.289 (51.901204) DEC = -03:46:20.42 (-3.77234)
Discovery date: 2025-07-29 03:46:34.176 (JD=2460885.65734)
Photometry
Discovery (first detection):
Discovery date: 2025-07-29 03:46:34.176
Flux: 17.765 ABMag
Filter: orange-ATLAS
Instrument: ATLAS-03
Telescope: ATLAS Sutherland
Last non-detection:
Last non-detection date: 2025-07-23 10:35:22
Limiting flux: 18.84 ABMag
Filter: cyan-ATLAS
Instrument: ATLAS-04
Telescope: ATLAS El Sauce
Details of the new object can be viewed here: https://www.wis-tns.org/object/2025som
Date Received (UTC): 2025-07-29 13:19:15
Date made public:
Sender: ATLAS_Bot1
Reporting Group: ATLAS Discovery Data Source: ATLAS
J. Tonry, L. Denneau, H. Weiland, R. Siverd (IfA, University of Hawaii), N. Erasmus, W. Koorts (South African Astronomical Observatory), A. Jordan, V. Suc (UAI, Obstech), M. R. Alarcón, J. Licandro, P. Nichita (IAC), S. J. Smartt, K. W. Smith (Oxford/QUB), D. R. Young, M. Nicholl, M. Fulton, M. McCollum, T. Moore, J. Weston, X. Sheng, C. R. Angus, A. Wilson, A. Aamer, D. Magill (QUB), P. Ramsden (Birmingham/QUB), L. Shingles (GSI/QUB), S. Srivastav, J. H. Gillanders, H. Stevance, A. J. Cooper, F. Stoppa, J. Tweddle (Oxford), L. Rhodes (TSI/McGill), A. Rest (STScI), T.-W. Chen (NCU), C. Stubbs (Harvard), J. S. Sommer (LMU), B. P. Schmidt (ANU) report/s the discovery of a new astronomical transient.
IAU Designation: SN 2025som
Discoverer internal name: ATLAS25ile
Coordinates (J2000): RA = 03:27:36.289 (51.901204) DEC = -03:46:20.42 (-3.77234)
Discovery date: 2025-07-29 03:46:34.176 (JD=2460885.65734)
Photometry
Discovery (first detection):
Discovery date: 2025-07-29 03:46:34.176
Flux: 17.765 ABMag
Filter: orange-ATLAS
Instrument: ATLAS-03
Telescope: ATLAS Sutherland
Last non-detection:
Last non-detection date: 2025-07-23 10:35:22
Limiting flux: 18.84 ABMag
Filter: cyan-ATLAS
Instrument: ATLAS-04
Telescope: ATLAS El Sauce
Details of the new object can be viewed here: https://www.wis-tns.org/object/2025som